Worked on the linagora/twake-on-matrix repository, delivering both a feature and a bug fix to enhance chat room management and user experience. Addressed a bug in the read receipt indicator by refining the SeenByRow logic and last-event seen calculation, ensuring accurate message status display in the chat list. Developed and tested a new workflow for transferring chat room ownership, including UI updates to support seamless transitions without disrupting existing functionality. Utilized Dart and Flutter for mobile development, with a focus on UI/UX design and comprehensive testing. These contributions improved reliability, reduced user confusion, and streamlined administrative processes within the application.